A Green Environmental Protection Production Method of Disperse Dyes
A large amount of waste water produced in the production of disperse dyes has been a problem perplexing the dye industry.It is estimated that it usually discharges about 20 tons of mother liquor and dozens of tons of washing water to produce one ton of disperse dye.It will have a great influence on the environment if discharged directly.In the paper,the methods of mother liquor recovery and multistage washing were described in detail,and it was proved by experiment that the quality of dyes will not be affected by mother liquor recovery and multistage washing.At the same time,the discharge of wastewater is greatly reduced which meets the requirements of environmental protection.
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